The Aden Emergency: The Battle of the Crater in which the British Argyll and Sutherland Highlanders retake the Crater district following the Arab Police mutiny.

The Aden Emergency, also known as the 14 October Revolution or as the Radfan Uprising, was an armed rebellion by the National Liberation Front (NLF) and the Front for the Liberation of Occupied South Yemen (FLOSY) against the Federation of South Arabia, a British Protectorate of the United Kingdom, which led to the proclamation of the People's Republic of South Yemen.

The Battle of Crater or Operation Stirling Castle was an encounter in 1967 during the Aden Emergency. After the mutiny of the Arab Armed Police and ambush of British troops by them, the Crater district in Aden was abandoned by British troops. The British then decided to enter Crater and retrieve the bodies of dead British soldiers.

The Argyll and Sutherland Highlanders (Princess Louise's) is a light infantry company (designated as Balaklava Company, 5th Battalion, Royal Regiment of Scotland) and was a line infantry regiment of the British Army that existed from 1881 until amalgamation into the Royal Regiment of Scotland on 28 March 2006.

Crater, also Kraytar, is a district of the Aden Governorate, Yemen. Its official name is Seera. It is situated in a crater of an ancient volcano which forms the Shamsan Mountains. As of 2003, the district had a population of 76,723 people.

The Arab Police mutiny was an incident during the Aden Emergency where Arab soldiers and police mutinied against British troops. While the mutiny itself was localized and quickly suppressed, it undermined the South Arabian Federation which had been organized by Britain in 1959 as an intended successor to direct colonial rule.